<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <script src="http://cdn.static.runoob.com/libs/angular.js/1.4.6/angular.min.js"></script>
</head>
<body>
<div ng-app="myApp" ng-controller="myCtrl">
<p>两秒后显示信息：</p>
<h1>{{ myHeader }}</h1>
</div>
<p>$timeout 访问在规定的毫秒数后执行指定函数</p>
<script>
    var app = angular.module('myApp',[]);
    app.controller('myCtrl',function ($scope,$timeout) {
        $scope.myHeader = "Hello World!";
        $timeout(function () {
            $scope.myHeader = "How are you tody?";
        },2000);
    });
</script>
</body>
</html>